import router from '../router'
import store from '@/store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/cookies' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login'] // no redirect whitelist

router.beforeEach(async(to, from, next) => {
    // start progress bar
    NProgress.start()

    // set page title
    document.title = getPageTitle(to.meta.title)

    // determine whether the user has logged in
    const hasToken = getToken()

    if (to.path === '/logout') {
        console.debug("going to logout")
        store.commit('LOGOUT')
        next('/login')
        return
    }

    if (hasToken) {
        if (to.path === '/login') {
            // if is logged in, redirect to the home page
            next({ path: '/' })
            NProgress.done()
        } else {

            // determine whether the user has obtained his permission roles through getInfo
            let hasRoles = store.getters.roles && store.getters.roles.length > 0
            if (hasRoles) {
                if (store.getters.permission_routes.length === 0) {
                    try {
                        await store.dispatch('permission/generateRoutes')
                        // router.addRoutes(accessRoutes)
                        next({ ...to, replace: true })
                    } catch (error) {
                        // remove token and go to login page to re-login
                      console.log(error)
                      Message.error(error || '发生错误')
                      setTimeout(()=>{
                        store.commit('LOGOUT')
                        location.reload()
                        next(`/login?redirect=${to.path}`)
                        NProgress.done()
                      },5000)
                    }
                }else {
                    next()
                }
            } else {
              Message.error('未分配角色,请跟管理员联系')
              setTimeout(()=>{
                store.commit('LOGOUT')
                location.reload()
                next(`/login?redirect=${to.path}`)
                NProgress.done()
              },5000)
            }
        }
    } else {
        /* has no token*/
        if (whiteList.indexOf(to.path) !== -1) {
            // in the free login whitelist, go directly
            next()
        } else {
            // other pages that do not have permission to access are redirected to the login page.
            next(`/login?redirect=${to.path}`)
            NProgress.done()
        }
    }
})

router.afterEach(() => {
    // finish progress bar
    NProgress.done()
})
